# File lib/mack-data_mapper/test_extensions.rb, line 21
21:           def rollback_transaction
22:             begin
23:               Mack::Testing::DmTestTransactionWrapper.transaction do
24:               # DataMapper::Transaction.new.commit do
25:                 yield if block_given?
26:                 raise "Rollback!"
27:               end
28:             rescue => ex
29:               # we need to do this so we can throw up actual errors!
30:               unless ex.to_s == "Rollback!"
31:                 raise ex
32:               end
33:             end
34:           end